Controllable hot melt adhesive spinning method and device

Abstract

The present invention relates to melting and blow molding method and melting and blow molding spray nozzle assembly, and is especially controllable hot melt adhesive spinning method and device. The controllable hot melt adhesive spinning method includes the following steps: 1. dispersing hot melt adhesive in at least one adhesive channel at the first speed to form hot melt adhesive adhesive; and 2. dispersing air flow in at least one air channel in the relatively high second speed to form the separated first air flow, with the first air flow converging and guiding the hot melt adhesive flow and mixing with the hot melt adhesive flow for form the third fluid filament flow. The present invention has the beneficial effects of no hot meld adhesive twisting and burr, effective control of the adhesive filament, low adhesive consumption, low cost, etc.

Description

[0001] [The technical field] [0002] The invention relates to a general melt blow molding method and a nozzle assembly for implementing the melt blow molding method, in particular to a hot melt adhesive controllable spinning method and device. [Background technique] [0003] At present, with the increasingly stringent requirements for product environmental protection, the production and processing of products using green environmentally friendly raw materials has been greatly promoted in various industries. As a pollution-free and environmentally friendly viscose, hot melt adhesive is widely used in papermaking, clothing, shoemaking, packaging, electronics and other industries. Due to the many industries involved, strict technical requirements, and user requirements for accurate and efficient production at the lowest production cost, all have promoted the development of the industry's high-speed, low-gluing gas consumption, and precise control of product quality. In order to achie...

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Problems solved by technology

However, this structure makes the rubber filaments ejected from two adjacent glue spraying holes prone to entanglement, difficult to control the rubber filaments, and prone to flashes and glue flying.

[0006] There is also a spray unit group, the glue spray holes and air spray holes are arranged in parallel according to air, glue, air, glue, gas..., or two air spray holes are arranged between the glue spray holes, to a certain extent It overcomes the shortcomings of the above-mentioned technologies, but the control of the glue filament is still not very good-because the non-convergent guiding colloid flow is a passive guiding method, the gas flow needs to have sufficient pressure and speed, otherwise each gas flow It will interfere with each other, and it is still prone to overlap of flash, flying glue and glue filament, resulting in glue consumption

At the same time, due to the need for sufficient pressure and velocity of the gas flow, a considerable amount of compressed air is required, and the cost is high

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